Eugene f



I um IM FHIIAJHM lwlmllll i '(NOModem' y I E. I'. H-ARDIN.

ELB-VATOR GATE.

Pat

l! l will? i ,flph E ATTORNEYS.

UNITED STATES PATENT OFFICE.

EUGENEV E. HAEDIN, .oE LiNooLN, NEBRASKA.

ELEVATOR-GAT.

SPECIFICATION forming part of Letters Patent No. 374,739, dated December 13, 1887, Application tiled March 23, 1887. Serial No. 232,090. (No model.)

which will be opened automatically by the rising carriage, and will close automatically' as the carriage farther ascends or descends.

The invention consists in certain novel features of construction and combinations of parts -of the gate, all as hereinafter described and claimed.

Reference is to 'be to the accompanying drawings, forming a part of this speciiication, 1n which similar letters of reference indicate corresponding parts in'all the figures.

Figure l is a front viewof part of an elevator-shaft of a building with the elevatorcarriage therein and my improved gate applied, parts being broken away and in section. Fig. 2 is a vertical sectional view taken at right angles to Fig. 1, and shows in full lines ihe carriage descending, and shows in dotted lilies the carriage vvstopped at its ascent at a iioor of the building and holding the gate open. Fig. 3 is a plan view, with the walls' of the elevator-shaft and the carriage hoist-rope in' section. Fig..'4 is an enlarged detail face view of the spring-catch, which is at the inner face of the gate; and Fig. 5 is an enlarged detail side view of t-he gate tripbar on the elevatorcarriage.

The elevator-carriage A may have any usual or approved construction adapting it to be raised and lowered by a ropeor cable, B,along guides C, fixed in the elevator shaft or well D. I show the elevator-shaft opening at door or gateways E E, at opposite sides, with the guides C C arranged atthe opposite ends of the shaft; but the shaft may have an opening E at one side only at each floor F of the building, as the location of the elevator may require.

The safety-gate G is fitted to slide in or on vertical guides or ways H H, which are xed to the side posts, I I, at the shaft-opening E, and these side posts are made hollow to receive weights J J, which hang from ropes or chains K K, which pass over suitable guides, preferably pulleys k 7c, at the top ot' the opening E, and thence pass down within or along the gate-guides H H to the top of the gate, to each end of which one of the ropes K is connected in any approved way.

I do not limit myself to the use of two weights for the gate, asa single weight suitably connected to the gate and fitted in a suitablevbox or casing, or left exposed, will serve as well and whether two weights or one be used for the gate the gravity of the weights or weight will be a little less than that of the connectedgate, so that when the gate is lifted by the ascending carriage and passes on to farther ascent, or de scends, the gate will overbalance the weights or weight and fall gently to closed position.

At the inner face of the gate Gr are iixed two opposite pairs of lugs, Z l', and the lugs l are tapped to serve as fixed nuts to screws M, which are adapted to clamp the outer ends of springs N Oto the opposing lugs, Z. The inner ends of thesesprings arebentaround upward, or have vertically ranging concavo-convex parts a o, the convex sides of which face each other, and are held normally apart for a space which is a little narrower than the outer end, p, ot' a trip-bar, P, which is pivoted at p to lugs on a metalplate, R, which is fastened to the head-beam a of the'elevatoncarriage. The plate R has lugs r i, one at each side of its outer end, and which brace the bar P laterally, so that its en d p, which projects beyond the head-beam of the carriage, will enter between the parts 'n o of the gate-springs N O and exert a like pressure on each of the springs. The springs N O may be held to the gate otherwise than -by the screws M; but this construction is preferred, as it allows-quick and easy adjustment of thesprings relatively with each other to cause them to always clamp the trip-bar P sufficiently to allow the gate to be lifted by the bar.

rIhe operation'is as follows: As the elevatorcarriage A ascends, the trip-bars P P, where two gates are used, will enter between the parts a o of the gate-springs N O, and will carry the gates upward with them until the carriage is stopped at the level of the desired floor F, and the bars P will hold the gates open below the lintels e of the wall-openings E until the goods have been loaded upon or roo unloaded from the carriage. Should it be desired to raise the carriage to an'upper floor, the carriage will be started, and the gates will be carried upward by the bars P until the stops of the gates strike the lintels e of the shaft-openings, which will stop the gates, and the trip-bars P will then be forcibly drawn through between the springs N O,leaving the gates free, and the gates then fall gently to the floor F and close the openings E thereat, as shown in full lines in Figs. land 2 of the drawings. If after being stopped at one floor and lifting the gates the carriage is lowered, the trip-bars will not pass through between the springs, but the springs will rest on the trip-bars as the gates descend with the carriage. If as the carriage descends it is to pass the closed gates at oors below it, the trip-bars P will simply swing upward on their pivots p', as shown in full lines in Fig. 2 and in dotted lines in Fig. 5, to allow them to pass by the gate-springs without expanding or wearing or straining them. y

It is obvious that this gate is very simple, and with the trip-bars on the carriage is entirely automatic in its operation, and it is quite inexpensive and may be easily fitted to elevator-shaft openings at any time without requiring great, if any, alterations of a building.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

y held thereby when the carriage is ascending,

substantially as herein shown and described.

3. The combination,with a sliding and counterbalaneed gate and an elevator-carriage, of the springs N O, secured to the inner face of the gate, and having the upwardly-bent ends n o, and the trip-bar l?, pivoted to the head-beam of the carriage, 4substantially as herein shown and described.

4. The combinatiomwith a sliding and countei-balanced gate and the elevator-carriage, of 5 5 the springs N O, adj ustably secured to the gate, and having the upwardly-bent ends n o, the trip-bar P, pivoted to the carriage, and means for preventing the lateral movement of the free end of the said trip-bar, substantially as herein shown and described.

EUGENE F. HARDIN.

Witnesses:

Jas. P. MASTERMAN, O. B. HoBBs. 

